Tornadoes in Will County
The Storm Prediction Center records 103 tornadoes whose paths touched Will County, Illinois between 1955 and 2025. They killed 34 people and injured 513. The busiest month is June, with 24 tornadoes. The strongest was an F5 on 28 August 1990. The most recent was on 19 March 2025.
- 103tornadoes
- 34deaths
- 513injuries
- 1,232per 10,000 sq mi of land
A tornado that crossed several counties counts in each one, so county counts add up to more than the state's.
How strong were the tornadoes in Will County?
| Rating | Tornadoes | Share |
|---|---|---|
| F0 / EF0 | 44 | 43% |
| F1 / EF1 | 35 | 34% |
| F2 / EF2 | 14 | 14% |
| F3 / EF3 | 6 | 6% |
| F4 / EF4 | 1 | <1% |
| F5 / EF5 | 1 | <1% |
| Unknown rating | 2 | 2% |
Will County tornadoes over time
The 2020s only run to 2025, so that bar is for a shorter period. The record starts in 1950.
Show the numbers
| Period | Count |
|---|---|
| 1950s | 2 |
| 1960s | 7 |
| 1970s | 13 |
| 1980s | 13 |
| 1990s | 11 |
| 2000s | 14 |
| 2010s | 15 |
| 2020s | 28 |
Show the numbers
| Period | Count |
|---|---|
| Jan | 1 |
| Feb | 1 |
| Mar | 10 |
| Apr | 16 |
| May | 12 |
| Jun | 24 |
| Jul | 19 |
| Aug | 11 |
| Sep | 2 |
| Oct | 2 |
| Nov | 5 |
| Dec | 0 |
Records for Will County
- Deadliest and Strongest: Joliet, Illinois tornado28 August 1990, F5, 29 deaths, 350 injuries, 16.4 miles long
- Longest path: Illinois tornado17 July 1972, F3, 81.5 miles long
- Most recent: Illinois tornado19 March 2025, EF1, 1.6 miles long
Notable tornadoes in Will County
- Joliet, Illinois tornado28 August 1990, F5, 29 deaths, 350 injuries, 16.4 miles long
- Plainfield, Illinois tornado27 April 1984, F3, 1 death, 5 injuries, 9 miles long
- Joliet, Illinois tornado29 June 1979, F4, 1 injury, 5.4 miles long
Many of these tornadoes killed or injured people. The numbers are the official record's, and they may be revised.